Abstract
The
seemingly
advantageous
features
of
carbon‐based
materials,
such
as
large
pore
volume
and
lightweight
structure,
could
actually
lead
to
low
tap
density
for
the
sulfur
cathode
excessive
electrolyte
consumption,
potentially
significantly
decreasing
energy
lithium–sulfur
battery.
Recently,
non‐carbon‐based
materials
composed
inorganic
matter
have
emerged
promising
candidates
creating
dense
cathodes
reducing
intake.
Additionally,
exhibits
strong
interactions
with
lithium
polysulfides,
which
can
address
intrinsic
problems
severe
shuttling
effect
poor
reaction
kinetics.
In
this
review,
we
first
discuss
relationship
between
Subsequently,
systematically
summarize
recent
advances
in
hosts.
Finally,
propose
future
research
directions
perspectives
host
inspire
realization
practical
battery
high
density.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(48)
Опубликована: Авг. 28, 2024
Abstract
Monocomponent
catalysts
exhibit
the
limited
catalytic
conversion
of
polysulfides
due
to
their
intrinsic
electronic
structure,
but
activity
can
be
improved
by
introducing
heteroatoms
regulate
its
structure.
However,
rational
selection
principles
doping
elements
remain
unclear.
Here,
we
are
guided
theoretical
calculations
select
suitable
based
on
balanced
relationship
between
adsorption
strength
lithium
(LiPSs)
and
sulfide.
We
apply
screening
method
develop
a
new
catalyst
phosphorus
doped
RuSe
2
,
manifesting
further
enhanced
conductivity
compared
with
original
facilitating
charge
transfer
modulating
d‐band
center
thereby
augmenting
effectiveness
in
interacting
LiPSs.
Consequently,
assembled
cell
exhibits
an
areal
capacity
7.7
mAh
cm
−2
even
under
high
sulfur
loading
8.0
mg
lean
electrolyte
condition
(5.0
μL
−1
).
This
strategy
offers
robust
solution
for
design
advanced
field
lithium‐sulfur
batteries
potentially
other
domains
as
well.
Energy & Fuels,
Год журнала:
2024,
Номер
38(15), С. 13837 - 13857
Опубликована: Июль 13, 2024
Lithium–sulfur
batteries
(LSBs)
are
a
new
type
of
energy
storage
system
with
great
potential,
which
has
an
ultrahigh
density
2600
Wh
kg–1.
However,
the
polysulfide
shuttle
and
dendrite
growth
have
seriously
impeded
practical
applications.
As
two-dimensional
(2D)
transition
metal
carbide/nitride,
MXene
possesses
advantages
conductivity,
structural
diversity,
abundant
terminal
groups.
Thus,
it
is
beneficial
to
regulate
dynamic
process
ions,
make
widely
applied
in
LSBs.
Guided
by
multifunction
LSBs,
this
work
summarizes
application
for
cathode
construction,
separator
modification,
anode
protection,
electrolyte
regulation.
Recent
related
works
reviewed
from
aspects
MXene-based
morphology
adjustment,
element
doping,
surface
composite
material
construction.
Finally,
challenges
prospects
prospected.
Two-dimensional
(2D)
van
der
Waals
heterostructures
endow
individual
2D
material
with
the
novel
functional
structures,
intriguing
compositions,
and
fantastic
interfaces,
which
efficiently
provide
a
feasible
route
to
overcome
intrinsic
limitations
of
single
components
embrace
distinct
features
different
materials.
However,
construction
uniform
heterointerfaces
still
poses
significant
challenges.
Herein,
universal
in-situ
interfacial
growth
strategy
is
designed
controllably
prepare
series
MXene-based
tin
selenides/sulfides
homogeneous
heterostructures.
Molten
salt
etching
by-products
that
are
usually
recognized
as
undesirable
impurities,
reasonably
utilized
by
us
transform
into
nanostructures
via
growth.
The
obtained
present
sandwiched
structures
lamellar
interlacing
networks
heterointerfaces,
demonstrate
efficient
conversion
from
3D
composite
Such
significantly
enhance
charge
transfer
efficiency,
chemical
reversibility,
overall
structural
stability
in
electrochemical
process.
Taking
2D-SnSe
Although
noteworthy
research
focuses
on
heterostructured
catalysts
for
efficient
polysulfide
adsorption
in
lithium-sulfur
(Li-S)
batteries,
the
strategy
maximized
electrocatalytic
activity
is
less
investigated.
Herein,
Mn2O3/β-MnO2
heterostructure
electrocatalyst
engineered
via
situ
regulation
of
atomically
dispersed
Zr4+
sites
form
Zr-Ox
coordinated-structure
as
a
highly
stable
freestanding
cathode.
The
fine-tuned
can
adjust
inducing
reduced
overpotential,
improved
Li+
mobility,
and
boosted
redox
kinetics.
Their
achievements
are
synergistically
derived
from
inhibition
migration,
utilization
3D
Li2S
nucleation
mechanism,
modification
d-band
center
electrocatalysts,
resulting
crack-free
anode-protection,
diffusion-favorable
deposition,
sustainable
sulfur-reactions.
Eventually,
Zr0.1-Mn2O3/β-MnO2@MWCNT
cathode
demonstrates
high
initial
capacity
808
mAh
g-1
with
low
average
decay
rate
0.068%
over
1000
cycles
at
1
C,
even
along
an
impressive
cyclic
stability
5
C
showing
up
to
559.3
only
0.170%
200
cycles.
Noteworthy,
electrocatalyst-applied
cell
achieves
areal
half-/full-cell
(N/P:
2.86)
4.45/3.88
cm-2
61.7/70.1%
retention
110/50
under
4.6/5.4
mg
sulfur
loading
electrolyte
8
µL
mgsulfur
-1.
This
highlights
new
perspective
design
high-performance
Li-S
batteries.
Journal of Materials Chemistry C,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
MXene
nanosheets
were
prepared
using
an
HF-HCl
mixed
acid
etching
method
and
applied
as
separators
in
lithium–sulfur
batteries.
The
effect
of
different
intercalants
on
the
performance
batteries
was
investigated.
